[Rd] Bug in miniR installation (PR#7448)

[luisfrank at arnet.com.ar]

While installing the windows miniR programm the setup wizard looks for 
the MINIR-1.bin, but the downloaded file is named MINIR_1.bin. In 
consequence installation aborts. The user can fix this bug by changing 
manually the dash of the file name. Please, make sure that both the 
setup wizard and the .bin refer to the same sintax.

Thanks!
Luis Frank